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DUMB WAHM.

Patented Apr. 19, 1887.

FIGA.

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over the counterpoise-well.

UNITED STATES PATENT OFFICE.

GEORGE CANNON, OF POUGHKEEPSIE, NEV YORK.

SPECIFICATION forming part of Letters Patent. N o. 361.263, dated April19, 1887.

' Application filed February 17, 1887. Serial No. 227,985. (No model.)

G shows the pulley that conducts the rope 5o To all whom it mayconcern/.-

Be it known that I, GEORGE W. CANNON, a citizen of the United States,residing at Poughkeepsie, county of Dutchess, and State of New York,have invented a new and useful Dumb- Waiter, of which the following is aspecification. Y

My invention relates to improvements in dumb-waiters; and it consists ofa combination and an arrangement of pulleys, rope, and dumb-waiter carand counterpise-weight` so arranged as to dispenseentirely with theusual hoistwheel and axle, and use only three sizes of pulleys andonecontinuous rope for operating the same. I can put upon the caranother rope, connecting it with the counterpoise-weight, which is usedsimply as a safety appliance, which may or may not be used, at theoption of the parties.

The novelty of myinvention consists in the simplicity of constructionand ease of operation. By the use of one continuous rope its slack isalways taken u p, and it is easily operated. My pulleys may al1 be madeof the same size; but for ease of operation Iprefer to place upon theupper shelf three sizes, in or der to lessen friction and carry theropes to their respective positions with the least possible friction.

I will now explain my invention with reference to the drawings.

Figure 1 is a plan view of'my dumbwaiter. Fig. 2 is a sectional view,looking down upon the same, showing t-he counterpoise-well at one cornerthereof'. This well may be placed in any position around the car-wellwhich convenience of construction may dictate, and

Fthe pulleys ou this shelf :may be changed ac- Vcordingly. O4

Like letters indicate like parts.

A shows the large pulley-wheel, which takes the rope from the frontcorner of the car-well, and carries it at any angle desired to a pointvertically overone side of the pulley or pulleys on the top of thewaiter-car.

B shows a pulley, taking the rope at the other front corner of thecar-well and carrying` it in any desired direction to the pulley locatedperpendicularly downward into the weightwell, to and around the movablepulley E.

E shows the movable pulley lwhich sustains the counterpoise-weight, andto the top of which the safety-rope L, when used, may be attached.

F shows the pulley attached to the top of the car, near the middle pointthereof; and in case 'of large dumb-waiters two pulleys ofthisdescription may be placed on top of the car and the hoist-rope passedunder both of them.

G shows the car of the dumb-waiter.

H shows the continuous workingrope, one end of which is attached to thebottomA of the upper shelf, K, at I, and passes vertically down underthe pulley F and over the pulley A, and downthe frontvside of thecar-well under the pulleys P and O, and up the other front edge of thecar-well over the pulleys B and G, and down under the movable pulley Eand up to the bottom of the shelf K at the point J, where this end ofthe rope is fastened.

K shows the upper shelf above the car and counterpoise-well.

L shows the safety-rope, attached at one end near the pulley F to thecar, and at the other end, after passing over the pulley D, it is madefast to the movable pulley E.

M shows the counterpoise-weight.

It may be seen by my construction that the counterpoise or weight wellmay be located on either of the three sides of the car-well, asconvenience of construction may dictate, and this well may be inclosedin such manner that the block E will not revolve by any untwisting ofthe rope. The holes through the shelves above and below the car-well,through which the ropes work, are provided with iron thimbles.

Having thus described my invention, what I claim isl. The combination ofa dumb-waiter car having connected thereto a counterbalance-Weight,lVI,with the pulleys AB C F, and pulleyblock E, arranged, asshown, upon and beneath the shelf K, and the operating-ropeH, secured tothe shelf at I and passing under the pulley F, over the pulley A, andunder the pulleys P and 0, and over the pulleys B and C, and under themovable block E, and secured to the shelf Kut: J, as shown anddescribed.

2. The combination of a dumb-Waiter car,

5 having connected therewith acounterbalance- Weight, M, the pulleys A BC F, and pulleyblock E, arranged, as shown, upon and beneath XVtnesses:

over the pulley A, and under bhe pulleys l and lo O, and over thepulleys B and C, and under the movable block E, and secured. to theshelf K ab J, lche safety-rope L, and the pulley D, substantially asshown and described.

GEORGE XV. CANNON.

the shelf K, the operating-rope H, secured to F. XV. PUGSLEY, the shelfat I and passing under the pulley F, R. E. LANSING.

